Concentrations of particulates and fluorides according to potroom job categories
|
Total particulates (mg/m3) (HS 5.0 mg/m3) Geometric mean (SD) |
Total fluorides (mg/m3) (HS 1.0 mg/m3) Geometric mean (SD) | |
| Pot-operator (Prebake) (n=20) | 1.58 (0.93) | 0.38 (0.10) |
| Pot-operator (Søderberg) (n=21) | 0.97 (0.29) | 0.22 (0.04) |
| Stud pulling (n=10) | 0.37 (0.12) | 0.08 (0.01) |
| Rodding plant (n=20) | 0.86 (0.36) | 0.12 (0.05) |
| Potroom maintenance (n=13) | 2.08 (2.62) | 0.24 (0.20) |
| Gas cleaning (n=15) | 4.52 (5.07) | 2.46 (4.10) |
HS=Norwegian hygienic standards; n=number of exposure measurements during 1 year.